37results about How to "Guaranteed installation size" patented technology

The invention relates to an erecting welding technological method for a single-upper-ring type large segmented stand ring with sole plates. A sole plate positioning template and positioning pipes are used for precise positioning; and after splice welding of a lower guide plate, fixed guide vane mounting holes are perforated in a matched mode, and then fixed guide vanes are inserted. The key process problems of stand ring welding deformation, sole plate assembly positioning, sole plate combining through hole processing cost, the production cycle and the like are solved through an auxiliary lower ring, the sole plate positioning templates and the positioning pipes, and the production cost and the production cycle are reduced. According to the stand ring manufactured through the technological method, the problems of assembly positioning, the production cost, welding deformation and the like are effectively solved, and construction site installation requirements are met; the subsequent production cycle and processing cost are greatly reduced, economy and practicability are both considered, and the purposes of lowering cost and improving effects are achieved.

The invention discloses a TD-SCDMA dualpolarization intelligent integral antenna which comprises an antenna dome, an antenna backboard, a stiffener, a cavity body, a prop and an end cover. A grab is arranged on the antenna dome; a clamping slot matched with the grab is arranged on the stiffener; and the antenna dome and the stiffener are tightly clamped by the matched use of the grab and the clamping slot. The TD-SCDMA dualpolarization intelligent integral antenna has light entire weight, does not need to be fastened by bolts, can accomplish excellent sealing and water prevention only by filling less silicone adhesive, has good consistency and high production efficiency during production, and improves the first-time qualification rate of products.

The invention discloses a production process for an aluminum alloy window sectional material. The production process for the aluminum alloy window sectional material comprises the following steps: A1,cast ingot preparation; A2, soaking; A3, raw material preheating; A4, extrusion forming: an aluminum alloy cast ingot is extruded through an extruder, the aluminum alloy cast ingot is extruded by theextruder, so that the aluminum alloy cast ingot in an extrusion barrel is enabled to extrude towards an extrusion die and extruded out from a die hole of the extrusion die, and in the process, the temperature of the extrusion die is controlled to be 380 DEG C; A5, preliminary cooling: water cooling is adopted, and the extruded aluminum alloy section material is cooled to be 250-300 DEG C; A6, rolling straightening: the surface of the aluminum alloy section material is rolled through a straightening machine, so that the surface of the aluminum alloy section material is straight; A7, aftercooling: air cooling is adopted, and the aluminum alloy section material is cooled to be 200 DEG C and below; A8, heat treatment; and A9, surface treatment. The production process for the aluminum alloy window sectional material has the following advantage and effect: due to the production process, the accuracy of the straightness and the surface planeness of the aluminum alloy section material is increased, so that a guarantee on the installation dimensions of an aluminum alloy window prepared from the aluminum alloy sectional material is benefited.

The invention provides an aluminum alloy profile machining system. The system comprises a table plate, a profile feeding unit, a profile bending unit, a bending angle blocking unit and a bending and grinding unit; a through groove is formed in one side of the top of the table plate; the profile feeding unit comprises a feeding assembly, a speed control assembly and a buffering assembly and is mounted at the through groove in the table plate; the profile bending unit comprises an execution assembly and a power transmission assembly and is mounted on the side, away from the through groove, of the table plate; the bending angle blocking unit is mounted on the side, close to the profile bending unit, of the table plate; and the bending and grinding unit is mounted on the table plate and corresponds to the bending angle blocking unit. The feeding assembly can clamp and rotate an aluminum alloy profile oppositely to drive the aluminum alloy profile to move forwards, the power transmission assembly can drive the execution assembly to bend the aluminum alloy profile, the bending angle blocking unit can control the bending angle of the aluminum alloy profile to be a round angle or a right angle, the bending and grinding unit can flatten or grind wrinkles generated in the bending position, and the mounting size and the external attractiveness of the profile are ensured.

The invention discloses a front-section assembly of a leaf spring suspension chassis frame of a low drive zone passenger car. The front-section assembly is composed of two parts including the lower main part and the upper main part. The lower main part is formed by connecting a first cross beam assembly, a first left longitudinal beam, a first right longitudinal beam and a second lower cross beam assembly through bolts and nuts. The upper main part is formed by connecting a second upper cross beam assembly, a second left longitudinal beam, a second right longitudinal beam and a third cross beam assembly through bolts. By the adoption of the front-section assembly, the longitudinal beams on the front section of the frame are formed by connecting upper sections with lower sections, and connecting positions are reinforced through an upper cross beam, a lower cross beam and side connecting boards. The second left longitudinal beam and the second right longitudinal beam on the front section of the frame are of bent structures. Longitudinal beam steel pipes on the middle section of the frame are arranged of the same-form structure. Steel pipe transition positions are welded. The bent portions of the second left longitudinal beam and the second right longitudinal beam on the front section of the frame are reinforced through additionally-arranged connecting boards. The first left longitudinal beam and the first right longitudinal beam on the front section of the frame are of the sectional structures with the rear portions higher than the front portions. The front-section assembly has the beneficial effects of being simple in structure, firm, stable, convenient to assemble, low in cost and high in universality.

The invention discloses a method for improving installation precision of a guide rail on a bulkhead plate of a transverse bulkhead, the method is based on an auxiliary tool, and the auxiliary tool comprises a right-angle part; a rectangular part, the first end of the rectangular part is perpendicularly connected to one right-angle side of the right-angle part, and the second end of the rectangular part extends in the direction away from the right-angle part; the method comprises the steps of arranging wall plates of the transverse bulkhead horizontally; defining a guide rail center line on the wall plate; defining offset lines at predetermined distances on two sides of the center line of the guide rail; placing a guide rail; adjusting guide rail position, when the right-angle point of the right-angle part is aligned with the two offset lines from the two sides of the guide rail respectively, attaching the second ends of the rectangular part to the outer walls of the two sides of theguide rail respectively, wherein the measured fall values of the bottom edge of the rectangular part and the two sides of the guide rail are equal.

The invention relates to a bed body structure of a Raschel loom. The bed body structure comprises a bed main body. A first oil tank structure, a second oil tank structure, a sand tank structure, a machine frame supporting structure, a guide bar transverse movement supporting structure, a hydraulic element installing structure and a main motor base installing structure are arranged on the bed main body. The machine frame supporting structure is located at the lathe head, the lathe middle and the lathe tail of the bed main body. The main motor base installing structure is located on the back face of the bed main body. The first oil tank structure is located at the upper portion of the bed main body. The sand tank structure is located below the first oil tank structure. The second oil tank structure, the guide bar transverse movement supporting structure and the hydraulic element installing structure are located at the lathe head of the bed main body. The bed body structure is uniform in structure distribution, firm in welding and high in overall strength and rigidity; meanwhile, various installation positions of other parts of a main machine are prefabricated, and the installation size is ensured.

The invention discloses a bracket for fixing a condenser on an intercooler and an intercooler core body, belongs to the technical field of vehicle-mounted heat dissipation, and solves the technical problems of complicated manufacturing process, time and force waste and lower assembly precision and production efficiency in the prior art. The bracket for fixing the condenser on the intercooler comprises the bracket and the intercooler core body, wherein the bracket is provided with a thread hole; the intercooler core body comprises a core body protection plate; and the bracket is welded on the core body protection plate. Through the device structure, one welding procedure is saved, both time and labor are saved, the mounting size of the condenser can be guaranteed, and the production efficiency is improved.

The invention belongs to the technical field of machinery, and relates to a thick plate line rolling mill stand roller test run device and a detection method, the thick plate line rolling mill stand roller test run device comprises a test run tool platform and a stand roller assembly fixedly installed on the test run tool platform, and the stand roller assembly comprises a stand roller body and bearing seats arranged at the two ends of the stand roller body in a matched mode; and the test run tool platform comprises an installation platform and fixed bases fixed to the two ends of the installation platform respectively, and the fixed bases are higher than the installation platform and fixedly attached to the bottoms of the rack roller assembly bearing seats. The test run tool platform is used for performing test run detection on the rack roller, so that the repair test run acceptance of the rack roller is guaranteed, and the repair quality is improved; and the device can simulate the production working condition to detect the forward and reverse rotation of the rack roller, and detect the conditions of axial movement, abnormal sound, sealing performance, bearing heating and the like, can guarantee the installation size, effectively prolongs the service life of rack roller equipment, reduces the repair cost, and improves the production efficiency.